UPD70F3786GJ-GAE-AX Datasheet, PDF (666/1817 Pages) Renesas Technology Corp – RENESAS MCU V850ES/Jx3-E Microcontrollers

V850ES/JH3-E, V850ES/JJ3-E
CHAPTER 12 REAL-TIME COUNTER
(9) Day count register (RC1DAY)
The RC1DAY register is an 8-bit register that takes a value of 1 to 31 (decimal) and indicates the count value of
days.
It counts up when the hour counter overflows.
This counter counts as follows.
• 01 to 31 (January, March, May, July, August, October, December)
• 01 to 30 (April, June, September, November)
• 01 to 29 (February in leap year)
• 01 to 28 (February in normal year)
When data is written to this register, it is written to a buffer and then to the counter up to 2 clocks (32.768 kHz) later.
Set a decimal value of 00 to 31 to this register in BCD code.
This register can be read or written in 8-bit units.
Reset sets this register to 01H.
Caution Setting a value other than 01 to 31 to the RC1DAY register is prohibited. Setting a value outside
the above-mentioned count range, such as “February 30” is also prohibited.
Remark
See 12.4.1 Initial settings, 12.4.2 Rewriting each counter during real-time counter operation, and
12.4.3 Reading each counter during real-time counter operation when reading or writing the
RC1DAY register.
After reset: 01H R/W Address: FFFFFAD6H
RC1DAY
0
0
R01UH0290EJ0300 Rev.3.00
Sep 19, 2011
Page 666 of 1817